Puerto Rico, 1898 Registered cover to New York City. Franked with U.S. 1898 5¢ dark blue, pair and strip of three (natural s.e.'s at right) tied by light oval cancels, purple "Registered, Sep 18, 1898, Military Station No. 1, Washington, D.C., Ponce, Ponce, Porto Rico." 4-line date stamp, reverse with return address from captain in Arroyo; light tone spots on stamps and small portion of back flap missing, F.-V.F. Scott No. U.S. 281  Estimate $750 - 1,000. $0 (Image)